<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.currentCity}}</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" 
						v-for="item of hot" 
						:key="item.id"
						@click="handleCityClick(item.name)"
					>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list">
					<div class="item border-bottom" 
						v-for="innerItem of item" 
						:key="innerItem.id"
						@click="handleCityClick(innerItem.name)"
					>
						{{innerItem.name}}
					</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
	import { mapState,mapMutations} from 'vuex'
	import Bscroll from 'better-scroll'
	export default {
	  name: 'CityList',
	  props:{
	  	cities:Object,
	  	hot:Array,
	  	letter:String
	  },
	  computed: {
	  	...mapState({
	  		currentCity:'city'
	  	})
	  },
	  methods: {
	  	handleCityClick (city) {
//	  		this.$store.dispatch('changeCity',city)
//	  		this.$store.commit('changeCity',city)
			this.changeCity(city)
	  		this.$router.push('/')
	  	},
	  	...mapMutations(['changeCity'])
	  },
	  mounted () {
	  	this.scroll = new Bscroll(this.$refs.wrapper)
	  },
	  watch: {
	  	letter () {
	  		if(this.letter){

		      	let element = this.$refs[this.letter][0];
//		        console.log(element);
				this.scroll.scrollToElement(element)
				
	  		}
	  	}
	  }
	}
</script>

<style lang="stylus" scoped>
	.border-topbottom
		&:before
			border-color:#ccc
		&:after
			border-color:#ccc
	.border-bottom
		&:before
			border-color:#ccc
	.list
		overflow:hidden
		position: absolute
		top:1.58rem
		left: 0
		right: 0
		bottom: 0
		.title
			line-height:.54rem
			background:#eee
			padding-left:.2rem
			color:#666
			font-size:.26rem
		.button-list
			overflow:hidden
			padding:.1rem .6rem .1rem .1rem
			.button-wrapper
				float:left
				width:33.33%
				.button
					padding:.1rem
					margin:.1rem
					text-align:center
					border:.02rem solid #ccc
					border-radius:.06rem
		.item-list
			.item
				line-height:.76rem
				color:#666
				padding-left:.2rem
</style>